/**
* Method declaration
*
*
* @param c
* @param channel
*
* @return
*
* @throws Exception
*/
private Result processDrop(Tokenizer c,
Channel channel)
{
channel.checkReadWrite();
channel.checkAdmin();
string sToken = c.getstring();
if (sToken.Equals("TABLE"))
{
sToken = c.getstring();
if (sToken.Equals("IF"))
{
sToken = c.getstring(); // EXISTS
sToken = c.getstring(); // <table>
dropTable(sToken, true);
}
else
{
dropTable(sToken, false);
}
channel.commit();
}
else if (sToken.Equals("USER"))
{
aAccess.dropUser(c.getstringToken());
}
else if (sToken.Equals("INDEX"))
{
sToken = c.getstring();
if (!c.wasLongName())
{
throw Trace.error(Trace.UNEXPECTED_TOKEN, sToken);
}
string table = c.getLongNameFirst();
string index = c.getLongNameLast();
Table t = getTable(table, channel);
t.checkDropIndex(index);
Table tn = t.moveDefinition(index);
tn.moveData(t);
dropTable(table);
linkTable(tn);
channel.commit();
}
else
{
throw Trace.error(Trace.UNEXPECTED_TOKEN, sToken);
}
return(new Result());
}
/**
* Method declaration
*
*
* @param c
* @param channel
* @param grant
*
* @return
*
* @throws Exception
*/
private Result processGrantOrRevoke(Tokenizer c, Channel channel,
bool grant)
{
channel.checkReadWrite();
channel.checkAdmin();
int right = 0;
string sToken;
do
{
string sRight = c.getstring();
right |= Access.getRight(sRight);
sToken = c.getstring();
} while (sToken.Equals(","));
if (!sToken.Equals("ON"))
{
throw Trace.error(Trace.UNEXPECTED_TOKEN, sToken);
}
string table = c.getstring();
if (table.Equals("CLASS"))
{
// object is saved as 'CLASS "java.lang.Math"'
// tables like 'CLASS "xy"' should not be created
table += " \"" + c.getstring() + "\"";
}
else
{
getTable(table, channel); // to make sure the table exists
}
c.getThis("TO");
string user = c.getstringToken();
// string command;
if (grant)
{
aAccess.grant(user, table, right);
// command = "GRANT";
}
else
{
aAccess.revoke(user, table, right);
// command = "REVOKE";
}
return(new Result());
}
/**
* Method declaration
*
*
* @param channel
*
* @return
*
* @throws Exception
*/
private Result processCheckpoint(Channel channel)
{
channel.checkAdmin();
if (lLog != null)
{
lLog.checkpoint();
}
return(new Result());
}
/**
* Method declaration
*
*
* @param c
* @param channel
*
* @return
*
* @throws Exception
*/
private Result processShutdown(Tokenizer c,
Channel channel)
{
channel.checkAdmin();
// don't disconnect system user; need it to save database
for (int i = 1; i < cChannel.Count; i++)
{
Channel d = (Channel)cChannel[i];
if (d != null)
{
d.disconnect();
}
}
cChannel.Clear();
string token = c.getstring();
if (token.Equals("IMMEDIATELY"))
{
close(-1);
}
else if (token.Equals("COMPACT"))
{
close(1);
}
else
{
c.back();
close(0);
}
processDisconnect(c, channel);
return(new Result());
}
/**
* Method declaration
*
*
* @param bDrop
* @param bInsert
* @param bCached
* @param channel
*
* @return
*
* @throws Exception
*/
public Result getScript(bool bDrop, bool bInsert, bool bCached,
Channel channel)
{
channel.checkAdmin();
Result r = new Result(1);
r.iType[0] = Column.VARCHAR;
r.sTable[0] = "SYSTEM_SCRIPT";
r.sLabel[0] = "COMMAND";
r.sName[0] = "COMMAND";
StringBuilder a = new StringBuilder();
for (int i = 0; i < tTable.Count; i++)
{
Table t = (Table) tTable[i];
if (bDrop)
{
addRow(r, "DROP TABLE " + t.getName());
}
a.Remove(0,a.Length);
a.Append("CREATE ");
if (t.isCached())
{
a.Append("CACHED ");
}
a.Append("TABLE ");
a.Append(t.getName());
a.Append("(");
int columns = t.getColumnCount();
Index pki = t.getIndex("SYSTEM_PK");
int pk = (pki == null) ? -1 : pki.getColumns()[0];
for (int j = 0; j < columns; j++)
{
a.Append(t.getColumnName(j));
a.Append(" ");
a.Append(Column.getType(t.getType(j)));
if (!t.getColumnIsNullable(j))
{
a.Append(" NOT NULL");
}
if (j == t.getIdentityColumn())
{
a.Append(" IDENTITY");
}
if (j == pk)
{
a.Append(" PRIMARY KEY");
}
if (j < columns - 1)
{
a.Append(",");
}
}
ArrayList v = t.getConstraints();
for (int j = 0; j < v.Count; j++)
{
Constraint c = (Constraint) v[j];
if (c.getType() == Constraint.FOREIGN_KEY)
{
a.Append(",FOREIGN KEY");
int[] col = c.getRefColumns();
a.Append(getColumnList(c.getRef(), col, col.Length));
a.Append("REFERENCES ");
a.Append(c.getMain().getName());
col = c.getMainColumns();
a.Append(getColumnList(c.getMain(), col, col.Length));
}
else if (c.getType() == Constraint.UNIQUE)
{
a.Append(",UNIQUE");
int[] col = c.getMainColumns();
a.Append(getColumnList(c.getMain(), col, col.Length));
}
}
a.Append(")");
addRow(r, a.ToString());
Index index = null;
while (true)
{
index = t.getNextIndex(index);
if (index == null)
{
break;
}
string indexname = index.getName();
if (indexname.Equals("SYSTEM_PK"))
{
continue;
}
else if (indexname.StartsWith("SYSTEM_FOREIGN_KEY"))
{
// foreign keys where created in the 'create table'
continue;
}
else if (indexname.StartsWith("SYSTEM_CONSTRAINT"))
{
// constraints where created in the 'create table'
continue;
}
a.Remove(0,a.Length);
a.Append("CREATE ");
if (index.isUnique())
{
a.Append("UNIQUE ");
}
a.Append("INDEX ");
a.Append(indexname);
a.Append(" ON ");
a.Append(t.getName());
int[] col = index.getColumns();
int len = col.Length;
if (!index.isUnique())
{
len--;
}
a.Append(getColumnList(t, col, len));
addRow(r, a.ToString());
}
if (bInsert)
{
Index primary = t.getPrimaryIndex();
Node x = primary.first();
bool integrity = true;
if (x != null)
{
integrity = false;
addRow(r, "SET REFERENTIAL_INTEGRITY FALSE");
}
while (x != null)
{
addRow(r, t.getInsertStatement(x.getData()));
x = primary.next(x);
}
if (!integrity)
{
addRow(r, "SET REFERENTIAL_INTEGRITY TRUE");
}
}
if (bCached && t.isCached())
{
a.Remove(0,a.Length);
a.Append("SET TABLE ");
a.Append(t.getName());
a.Append(" INDEX '");
a.Append(t.getIndexRoots());
a.Append("'");
addRow(r, a.ToString());
}
}
ArrayList uList = aAccess.getUsers();
for (int i = 0; i < uList.Count; i++)
{
User u = (User) uList[i];
// todo: this is not a nice implementation
if (u == null)
{
continue;
}
string name = u.getName();
if (!name.Equals("PUBLIC"))
{
a.Remove(0,a.Length);
a.Append("CREATE USER ");
a.Append(name);
a.Append(" PASSWORD ");
a.Append("\"" + u.getPassword() + "\"");
if (u.isAdmin())
{
a.Append(" ADMIN");
}
addRow(r, a.ToString());
}
Hashtable rights = u.getRights();
if (rights == null)
{
continue;
}
foreach( string dbObject in rights.Keys)
{
int right = (int) rights[dbObject];
if (right == 0)
{
continue;
}
a.Remove(0,a.Length);
a.Append("GRANT ");
a.Append(Access.getRight(right));
a.Append(" ON ");
a.Append(dbObject);
a.Append(" TO ");
a.Append(u.getName());
addRow(r, a.ToString());
}
}
if (dDatabase.isIgnoreCase())
{
addRow(r, "SET IGNORECASE TRUE");
}
Hashtable h = dDatabase.getAlias();
foreach(string alias in h.Keys)
{
string java = (string) h[alias];
addRow(r, "CREATE ALIAS " + alias + " FOR \"" + java + "\"");
}
return r;
}
/**
* Method declaration
*
*
* @param c
* @param channel
*
* @return
*
* @throws Exception
*/
private Result processCreate(Tokenizer c,
Channel channel)
{
channel.checkReadWrite();
channel.checkAdmin();
string sToken = c.getstring();
if (sToken.Equals("TABLE"))
{
processCreateTable(c, channel, false);
}
else if (sToken.Equals("MEMORY"))
{
c.getThis("TABLE");
processCreateTable(c, channel, false);
}
else if (sToken.Equals("CACHED"))
{
c.getThis("TABLE");
processCreateTable(c, channel, true);
}
else if (sToken.Equals("USER"))
{
string u = c.getstringToken();
c.getThis("PASSWORD");
string p = c.getstringToken();
bool admin;
if (c.getstring().Equals("ADMIN"))
{
admin = true;
}
else
{
admin = false;
}
aAccess.createUser(u, p, admin);
}
else if (sToken.Equals("ALIAS"))
{
string name = c.getstring();
sToken = c.getstring();
Trace.check(sToken.Equals("FOR"), Trace.UNEXPECTED_TOKEN, sToken);
sToken = c.getstring();
hAlias.Add(name, sToken);
}
else
{
bool unique = false;
if (sToken.Equals("UNIQUE"))
{
unique = true;
sToken = c.getstring();
}
if (!sToken.Equals("INDEX"))
{
throw Trace.error(Trace.UNEXPECTED_TOKEN, sToken);
}
string name = c.getName();
c.getThis("ON");
Table t = getTable(c.getstring(), channel);
addIndexOn(c, channel, name, t, unique);
}
return(new Result());
}
/**
* Method declaration
*
*
* @param c
* @param channel
*
* @return
*
* @throws Exception
*/
private Result processSet(Tokenizer c,
Channel channel)
{
string sToken = c.getstring();
if (sToken.Equals("PASSWORD"))
{
channel.checkReadWrite();
channel.setPassword(c.getstringToken());
}
else if (sToken.Equals("READONLY"))
{
channel.commit();
channel.setReadOnly(processTrueOrFalse(c));
}
else if (sToken.Equals("LOGSIZE"))
{
channel.checkAdmin();
int i = Int32.FromString(c.getstring());
if (lLog != null)
{
lLog.setLogSize(i);
}
}
else if (sToken.Equals("IGNORECASE"))
{
channel.checkAdmin();
bIgnoreCase = processTrueOrFalse(c);
}
else if (sToken.Equals("MAXROWS"))
{
int i = Int32.FromString(c.getstring());
channel.setMaxRows(i);
}
else if (sToken.Equals("AUTOCOMMIT"))
{
channel.setAutoCommit(processTrueOrFalse(c));
}
else if (sToken.Equals("TABLE"))
{
channel.checkReadWrite();
channel.checkAdmin();
Table t = getTable(c.getstring(), channel);
c.getThis("INDEX");
c.getstring();
t.setIndexRoots((string)c.getAsValue());
}
else if (sToken.Equals("REFERENCIAL_INTEGRITY") ||
sToken.Equals("REFERENTIAL_INTEGRITY"))
{
channel.checkAdmin();
bReferentialIntegrity = processTrueOrFalse(c);
}
else if (sToken.Equals("WRITE_DELAY"))
{
channel.checkAdmin();
bool delay = processTrueOrFalse(c);
if (lLog != null)
{
lLog.setWriteDelay(delay);
}
}
else
{
throw Trace.error(Trace.UNEXPECTED_TOKEN, sToken);
}
return(new Result());
}
/**
* Method declaration
*
*
* @param bDrop
* @param bInsert
* @param bCached
* @param channel
*
* @return
*
* @throws Exception
*/
public Result getScript(bool bDrop, bool bInsert, bool bCached,
Channel channel)
{
channel.checkAdmin();
Result r = new Result(1);
r.iType[0] = Column.VARCHAR;
r.sTable[0] = "SYSTEM_SCRIPT";
r.sLabel[0] = "COMMAND";
r.sName[0] = "COMMAND";
StringBuilder a = new StringBuilder();
for (int i = 0; i < tTable.Count; i++)
{
Table t = (Table)tTable[i];
if (bDrop)
{
addRow(r, "DROP TABLE " + t.getName());
}
a.Remove(0, a.Length);
a.Append("CREATE ");
if (t.isCached())
{
a.Append("CACHED ");
}
a.Append("TABLE ");
a.Append(t.getName());
a.Append("(");
int columns = t.getColumnCount();
Index pki = t.getIndex("SYSTEM_PK");
int pk = (pki == null) ? -1 : pki.getColumns()[0];
for (int j = 0; j < columns; j++)
{
a.Append(t.getColumnName(j));
a.Append(" ");
a.Append(Column.getType(t.getType(j)));
if (!t.getColumnIsNullable(j))
{
a.Append(" NOT NULL");
}
if (j == t.getIdentityColumn())
{
a.Append(" IDENTITY");
}
if (j == pk)
{
a.Append(" PRIMARY KEY");
}
if (j < columns - 1)
{
a.Append(",");
}
}
ArrayList v = t.getConstraints();
for (int j = 0; j < v.Count; j++)
{
Constraint c = (Constraint)v[j];
if (c.getType() == Constraint.FOREIGN_KEY)
{
a.Append(",FOREIGN KEY");
int[] col = c.getRefColumns();
a.Append(getColumnList(c.getRef(), col, col.Length));
a.Append("REFERENCES ");
a.Append(c.getMain().getName());
col = c.getMainColumns();
a.Append(getColumnList(c.getMain(), col, col.Length));
}
else if (c.getType() == Constraint.UNIQUE)
{
a.Append(",UNIQUE");
int[] col = c.getMainColumns();
a.Append(getColumnList(c.getMain(), col, col.Length));
}
}
a.Append(")");
addRow(r, a.ToString());
Index index = null;
while (true)
{
index = t.getNextIndex(index);
if (index == null)
{
break;
}
string indexname = index.getName();
if (indexname.Equals("SYSTEM_PK"))
{
continue;
}
else if (indexname.StartsWith("SYSTEM_FOREIGN_KEY"))
{
// foreign keys where created in the 'create table'
continue;
}
else if (indexname.StartsWith("SYSTEM_CONSTRAINT"))
{
// constraints where created in the 'create table'
continue;
}
a.Remove(0, a.Length);
a.Append("CREATE ");
if (index.isUnique())
{
a.Append("UNIQUE ");
}
a.Append("INDEX ");
a.Append(indexname);
a.Append(" ON ");
a.Append(t.getName());
int[] col = index.getColumns();
int len = col.Length;
if (!index.isUnique())
{
len--;
}
a.Append(getColumnList(t, col, len));
addRow(r, a.ToString());
}
if (bInsert)
{
Index primary = t.getPrimaryIndex();
Node x = primary.first();
bool integrity = true;
if (x != null)
{
integrity = false;
addRow(r, "SET REFERENTIAL_INTEGRITY FALSE");
}
while (x != null)
{
addRow(r, t.getInsertStatement(x.getData()));
x = primary.next(x);
}
if (!integrity)
{
addRow(r, "SET REFERENTIAL_INTEGRITY TRUE");
}
}
if (bCached && t.isCached())
{
a.Remove(0, a.Length);
a.Append("SET TABLE ");
a.Append(t.getName());
a.Append(" INDEX '");
a.Append(t.getIndexRoots());
a.Append("'");
addRow(r, a.ToString());
}
}
ArrayList uList = aAccess.getUsers();
for (int i = 0; i < uList.Count; i++)
{
User u = (User)uList[i];
// todo: this is not a nice implementation
if (u == null)
{
continue;
}
string name = u.getName();
if (!name.Equals("PUBLIC"))
{
a.Remove(0, a.Length);
a.Append("CREATE USER ");
a.Append(name);
a.Append(" PASSWORD ");
a.Append("\"" + u.getPassword() + "\"");
if (u.isAdmin())
{
a.Append(" ADMIN");
}
addRow(r, a.ToString());
}
Hashtable rights = u.getRights();
if (rights == null)
{
continue;
}
foreach (string dbObject in rights.Keys)
{
int right = (int)rights[dbObject];
if (right == 0)
{
continue;
}
a.Remove(0, a.Length);
a.Append("GRANT ");
a.Append(Access.getRight(right));
a.Append(" ON ");
a.Append(dbObject);
a.Append(" TO ");
a.Append(u.getName());
addRow(r, a.ToString());
}
}
if (dDatabase.isIgnoreCase())
{
addRow(r, "SET IGNORECASE TRUE");
}
Hashtable h = dDatabase.getAlias();
foreach (string alias in h.Keys)
{
string java = (string)h[alias];
addRow(r, "CREATE ALIAS " + alias + " FOR \"" + java + "\"");
}
return(r);
}
